One silver (pre-1965) half dollar weighs 12.5 grams, so 20 weigh 250 grams.
Franklin half dollars have a weight of 12.5 grams.
200 US Kennedy half dollars weigh approximately 7.12 pounds. Each Kennedy half dollar coin weighs about 11.34 grams.
A 20-coin roll of Franklin half dollars would have a face value of $10, would weigh 250 grams (8.0377 troy ounces, or 8.8185 oz avoirdupois), and being 90% silver, would have 7.234 troy ounces of silver, giving it a "melt value" of $102.80 (as of December 3, 2007)
The weight of the U.S. silver half dollar has changed over the course of it's history. In 1794 the silver half dollar weighed 13.48 grams and was 89.24 % silver. Then in 1836 the silver half dollar weight was changed to 13.36 grams and was 90% silver. In 1892 the silver half dollar weight was again changed to 12.50 grams which was the weight used until the final 90% silver half dollar struck for circulation was issued in 1964.
The U.S. did not mint any dollar coins in 1960.
U.S. half dollars dated before 1965 weigh 12.5 grams and contain 90% silver.
U.S. half dollars minted in 1965 through 1970 weigh 11.5 grams and contain 40% silver.
U.S. half dollars minted in 1965 through 1970 weigh 11.5 grams and contain 40% silver.
All Barber half dollars weigh 12.5 grams (slightly less if heavily worn) and contain 90% silver with 10% copper.
Half dollars 1965-70 are 40% silver.
The silver melt value of 820 US half dollars is $10,113.74. The silver melt value of 820 1965-70 US half dollars is only $4,135.40.
Half dollars dated 1964 and earlier are made of an alloy of 90% silver and 10% copper. These coins weigh 12.5 gm in new condition, so 90% of that is 11.25 gm.
Franklin half dollars have a weight of 12.5 grams.
200 US Kennedy half dollars weigh approximately 7.12 pounds. Each Kennedy half dollar coin weighs about 11.34 grams.
US dimes, quarters and half dollars dated 1964 and before contain 90% silver. Half Dollars from 1965 to 1970 contain 40% silver. The 1942 - 1945 nickels have 35% silver. Silver dollars dated 1935 and before have 90% silver.
A 20-coin roll of Franklin half dollars would have a face value of $10, would weigh 250 grams (8.0377 troy ounces, or 8.8185 oz avoirdupois), and being 90% silver, would have 7.234 troy ounces of silver, giving it a "melt value" of $102.80 (as of December 3, 2007)
U.S. silver dollars dated 1935 and earlier weigh 26.73 grams and contain 90% silver.